I know that the US Army takes this very seriously. Enlisted personnel are as somber and focused as they get. The mess halls are as quiet as libraries during the survey. Officers are encouraged to butt out.
Typically the number one thing is the made to order omelet for breakfast. That and coffee and many of them would be good for the rest of the day.
Soldiers have a say in what’s fed to them now? Wow! Then again I was in the NAVY. The food was excellent!